Abstract

Centrifugal partition chromatography (PC) was examined as a technique for measuring the partition coefficient of organic solutes. Two solvent systems of convenient viscosity were used, namely n-hexanol—water and cyclohexane—water. The partition coefficients thus determined (expressed as log P CPC/ol and log P CPC/ane, respectively) were shown to be well correlated with literature partition coefficients obtained by the shake-flask (SF) method in the n-ocatnol—water and n-hexane—water systems, respectively. Hydrogen-bonding parameters, I H , were calculated as (log P CPC/ol − log P CPC/ane) and (log P oct − log P hex); the good correlation between the I H values derived from the CPC and SF methods indicates that the same partitioning mechanism is operative in both methods.

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